Effect of a transverse magnetic field on the growth of equiaxed grains during directional solidification

被引：7

作者：

Li, Xi ^{[1
,2
]}

Wang, Jiang ^{[1
]}

Du, Dafan ^{[1
]}

Zhang, Yikun ^{[1
]}

Fautrelle, Yves ^{[2
]}

Henri Nguyen-Thi ^{[3
]}

Gagnoud, Annie ^{[2
]}

Ren, Zhongming ^{[1
]}

Moreau, Rene ^{[2
]}

机构：

[1] Shanghai Univ, State Key Lab Adv Special Steels, Shanghai 200072, Peoples R China

[2] PHELMA, SIMAP EPM Madylam G INP CNRS, F-38402 St Martin Dheres, France

[3] Aix Marseille Univ, F-13397 Marseille 20, France

来源：

MATERIALS LETTERS | 2015年 / 161卷

基金：

中国国家自然科学基金;

关键词：

Equiaxed grains; Magnetic field; TE magnetic effects; Directional solidification; ELECTROMAGNETIC SEPARATION; NONMETALLIC INCLUSIONS; MACROSEGREGATION; TRANSITION; DENDRITE; LIQUID;

D O I：

10.1016/j.matlet.2015.09.026

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of a transverse magnetic field on the growth of equiaxed grains during directional solidification of Al-10wt% Cu alloys was investigated experimentally and numerically. The experimental results show that the magnetic field has a great influence on the size and distribution of equiaxed grains. Indeed, the magnetic field causes refined and coarsen equiaxed grains to distribute on the both sides of the sample, respectively. In-situ synchrotron X-ray imaging shows that a transverse magnetic field induced some force which can act on equiaxed grains and cause the movement of equiaxed grains during directional solidification. Numerical results reveal that the modification of the structure may be attributed to the thermoelectric (TE) magnetic effects produced by the magnetic field. Furthermore, a new method of removing inclusions in molten metal is developed by means of the TE magnetic force. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：595 / 600

页数：6

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